Biosorption mechanism of nine different heavy metals onto biomatrix from rice husk

Krishnani, Kishore Kumar; Meng, Xiaoguang; Christodoulatos, Christos; Boddu, Veera M.

doi:10.1016/j.jhazmat.2007.09.113

Cited by 494 publications

(265 citation statements)

References 52 publications

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“…Researcher [19] also proved that the highest removal of Cu(II) was at pH value of 1.5. The highest Cu(II) removal reached at a very acidic pH condition (≤ 2) was also reported by other researchers [10], [18], [20].…”

Section: Optimization Of Phsupporting

confidence: 86%

“…As a result, the cation removal efficiency decreased at low pH. On the contrary, in the biosorption of metal anion such as SO4 2-, the anion metal removal efficiency increased at low pH [18]. Figure 1 reflects that pH value greatly affect the biosorption process of Cu(II) by the biosorbent.…”

Section: Optimization Of Phmentioning

confidence: 95%

“…2 The effect of pH towards Cu(II) biosorption by microalgae biosorbent, at temperature 28 °C ± 2 and contact time (Td) 60, 90, 120 minutes Among the physicochemical factors affecting biosorption, apparently pH value is the key factor that was most responsible. The pH value of the solution affects metal speciation [5] and the ionization of biosorbent's functional chains [5], [18]. Most studies of metal biosorption by microalgae showed the dependence relationship to pH value (pH-dependent).…”

Section: Optimization Of Phmentioning

confidence: 99%

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Improving Biosorption of Cu(ii)-Ion on Artificial Wastewater by Immobilized Biosorbent of Tropical Microalgae

Rinanti¹

2017

GEOMATE

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This research purposes to study the role of microalgae in tropical environment -isolated from Wastewater Treatment Plant (WWTP) Setiabudi, Jakarta, Indonesia -on biosorption of Cu(II) ion in heavy metal wastewater. The effects of pH and contact time on the rate of metallic biosorption were examined to reach the greatest biosorption efficiency. Microalgae diversity analysis through phenotypic approaches showed that the microalgae community was comprised of 3 species of Chloropyceae i.e Ankistrodesmus braunii, Chlorella sp., and Scenedesmus quadricauda var quadrispina. Immobilized biosorbent from microalgae was prepared by oven-drying, grinding, and entrapping the microalgae biomass into polymeric matrix of alginate. The sorption properties of biosorbent was characterized by using infrared spectroscopy and SEM micrograph analysis. The optimization of sorption parameters was conducted in batch systems using Cu(II)-artificial wastewater of 300 ppm with pH arrangement of 2-7 and the contact time arrangement of 60, 90, 120, 180, 240 minutes. During the experiment, the Chlorophyceae free and Na-alginat immobilized biomass were added. The research showed that either free and immobilized biomass could adsorb Cu(II) metal ion and reduce its concentration into 25-50 ppm. A maximum biosorption by the alginate-immobilized biosorbent obtained at pH 3,0 and contact time of 180 minutes with 43% absorption efficiency. Sorption properties of microalgae biomasses were indicated by various functional groups presence on biosorbent that could bind heavy metals compared to others. The research proved that the alginateimmobilized biosorbent was highly effective for the treatment of Cu(II)-artificial wastewater and that tolerant cholorophyceae could act as an effective biosorbent in further optimization.

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Section: Optimization Of Phsupporting

confidence: 86%

Section: Optimization Of Phmentioning

confidence: 95%

Section: Optimization Of Phmentioning

confidence: 99%

See 1 more Smart Citation

Improving Biosorption of Cu(ii)-Ion on Artificial Wastewater by Immobilized Biosorbent of Tropical Microalgae

Rinanti¹

2017

GEOMATE

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“…La modificación del biomaterial se realizó usando ácido cítrico 0,6M, para ello se llevó a cabo el contacto de 40 g de biomasa con 200mL de la solución, la cual se agitó durante 2 horas a 120 rpm y 60 °C; luego, estos biomateriales fueron lavados con agua destilada para retirar restos de ácido, y secados a 55 °C por 24 horas [14][15]. En general, el mecanismo de esta modificación se basa en la combinación de los grupos hidroxil con el ácido cítrico anhidro para formar un enlace éster e introducir grupos carboxilos a la celulosa del bagazo.…”

Section: Metodologíaunclassified

Evaluación de la biosorción con bagazo de palma africana para la eliminación de Pb (II) en solución

et al. 2015

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RESUMENSe propone la adsorción de Pb (II) usando bagazo de palma tratado químicamente con ácido cítrico, se elige este material por ser un desecho agroindustrial ampliamente disponible en la región Caribe colombiana. Los experimentos fueron llevados a cabo en sistema batch en solución acuosa de plomo a una concentración de 100 ppm. La determinación de la concentración de metal al final del proceso se midió por absorción atómica. La caracterización de los materiales adsorbentes usados se hizo por FTIR encontrando que los grupos hidroxilos y carboxílicos son los principales responsables de la capacidad de adsorción. Además, fue encontrado que el pH es el factor de mayor incidencia en el proceso, siendo el de 6 el valor óptimo. Por otra parte, se encontró que el Pb (II) presenta una sorción rápida durante los primeros 10 minutos, además el modelo de Elovich fue el de mejor ajuste. La capacidad máxima de adsorción según la isoterma de Langmuir fue de 162 y 451 mg/g para el bagazo sin modificar y modificado respectivamente, estableciendo que la modificación fue altamente eficiente.Palabras Clave: Adsorbente, Plomo, Residuo, Remoción, Tratamiento químico. ABSTRACTIt was studied the adsorption of Pb (II) using palm bagasse chemically treated with citric acid. This material is chosen due to is an available waste in the Colombian Caribbean region. The experiments were carried out in batch system in aqueous solution of lead at a concentration of 100 ppm. The determination of the heavy concentration at the end of the process was measured by atomic absorption. The characterization of adsorbent materials used was carry out using FTIR. It was found that the hydroxyl and carboxyl groups are mainly responsible of adsorption capacities. Furthermore, it was found that the pH is the most prevalent factor in the process. The optimum value was 6. Moreover, it was found that the Pb (II) exhibits rapid sorption during the first 10 minutes. The process was better fitted by the Elovich model. The maximum adsorption capacity according to Langmuir isotherm was 162 and 451 mg/g for unmodified and modified bagasse respectively. It was established that the chemical treatment was highly efficient.

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“…[3,7,8]. Technical and economic constraints often pose limitations on the industrial applicability of these methods especially in developing countries [6,9,10]. Adsorption, ion exchange, chemical settling and reverse osmosis are the most frequently preferred methods.…”

Section: Introductionmentioning

confidence: 99%

Sorption of Heavy Metal Ions (Cu2+ and Cd2+) From Simulated and Industrial Wastewaters Using Sugarcane Biomass

Opeolu

Fatoki

2017

Eco-Tech

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The widespread use of heavy metals in different manufacturing processes has resulted in their presence in the air, soil and aquatic ecosystems. Many manufacturing processes release their effluents into nearby streams and rivers due to non-availability of waste treatment technologies in the developing world. Industrialization has therefore been reported to be a major anthropogenic source of these elements and their compounds waterbodies. Conventional methods that are currently being used in the developed world (such as chemical precipitation, ultra-filtration, reverse osmosis, etc) are expensive and so, unaffordable to small-scale businesses prevalent in developing economies. The need for alternative, cheaper and available technologies therefore, cannot be over-emphasized. This study attempted to remove heavy metals (Cu 2+ and Cd 2+ ) from simulated and industrial (paint and textile) wastewaters using sugarcane biomass. A synthetic resin (Chelex) was used as control. Batch sorption experiments were conducted to assess the influence of contact time, adsorbent dose, adsorbate concentration, pH, agitation speed, temperature and particle size. Increases in the parameters (except particle size) gave corresponding increases in percentage adsorption of both metals. Optimal temperature for adsorption was achieved at 50 o C above which adsorption declined considerably. Experimental data for Cu 2+ and Cd 2+ fitted well into freundlich and langmuir isotherms. In textile effluent, 100% adsorption was achieved for both metals using sugarcane biomass in contrast to 89% and 91% for Cu 2+ and Cd 2+ respectively in chelex, a synthetic resin. Similarly, adsorption was 100% for both metals using the biosorbent. Sugarcane biomass may therefore be utilized for water and wastewater remediation in the developing world. Its biodegradability gives comparative advantage over alternative synthetic and expensive resins since its disposal will be more environmentally friendly.

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Biosorption mechanism of nine different heavy metals onto biomatrix from rice husk

Cited by 494 publications

References 52 publications

Improving Biosorption of Cu(ii)-Ion on Artificial Wastewater by Immobilized Biosorbent of Tropical Microalgae

Improving Biosorption of Cu(ii)-Ion on Artificial Wastewater by Immobilized Biosorbent of Tropical Microalgae

Evaluación de la biosorción con bagazo de palma africana para la eliminación de Pb (II) en solución

Sorption of Heavy Metal Ions (Cu2+ and Cd2+) From Simulated and Industrial Wastewaters Using Sugarcane Biomass

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